The TCR3DG series are CMOS general-purpose single-output

voltage regulators with an on/off control input, featuring low dropout

voltage, low output noise voltage and low inrush current.

These voltage regulators are available in fixed output voltages

between 1.0 V and 4.5 V and capable of driving up to 300 mA.

They feature over-current protection, thermal shut down function,

Inrush current protection circuit and Auto-discharge function.

The TCR3DG series are offered in the ultra small package

WCSP4E(0.645mm x 0.645mm; t 0.40mm). It has a low dropout

voltage of 160 mV (3.2 V output, IOUT = 300 mA) with low output

noise voltage of 38 μVrms (2.5 V output) and a load transient

response of only ⊿VOUT = ±80 mV ( IOUT = 1 mA?300 mA, COUT =1.0 μF).

As small ceramic input and output capacitors can be used with the TCR3DG series, these devices are ideal for portable

applications that require high-density board assembly such as cellular phones.

Features

? Low Drop-Out voltage

VIN-VOUT = 160 mV (Typ.) at 3.2 V-output, IOUT = 300 mA

? Low output noise voltage

VNO = 38 μVrms (Typ.) at 2.5 V-output, IOUT = 10 mA, 10 Hz <= f <= 100 kHz

? Fast load transient response (⊿VOUT = ±80 mV (Typ.) at IOUT = 1 ? 300 mA, COUT =1.0 μF )

? High ripple rejection ( R.R = 70 dB (Typ.) at 2.5V-output, IOUT = 10 mA, f =1kHz )

? Over current protection

? Thermal shut down function

? Inrush current protection circuit

? Auto-discharge function

? Pull down connection between CONTROL and GND

? Ceramic capacitors can be used ( CIN = 1.0μF, COUT =1.0 μF )

? Ultra small package WCSP4E (0.645 mm x 0.645 mm ; t 0.40 mm )